1345887 has 6 divisors (see below), whose sum is σ = 1944072. Its totient is φ = 897252.

The previous prime is 1345879. The next prime is 1345889. The reversal of 1345887 is 7885431.

It is not a de Polignac number, because 1345887 - 2³ = 1345879 is a prime.

It is a super-2 number, since 2×1345887² = 3622823633538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74763 + ... + 74780.

It is an arithmetic number, because the mean of its divisors is an integer number (324012).

2^1345887 is an apocalyptic number.

1345887 is a deficient number, since it is larger than the sum of its proper divisors (598185).

1345887 is a wasteful number, since it uses less digits than its factorization.

1345887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149549 (or 149546 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 1345887 is about 1160.1237003010. The cubic root of 1345887 is about 110.4085906201.

The spelling of 1345887 in words is "one million, three hundred forty-five thousand, eight hundred eighty-seven".